On Saturday afternoon, the two were joined by family and friends at a baby shower at the Bel Air Hotel's Garden Ballroom. Khloe, 33, is pregnant with the couple's first child together, a baby girl. On Saturday evening, she and Tristan celebrated his upcoming birthday at a private dinner party hosted by Rémy Martin at the Beauty & Essex restaurant in Hollywood.The Cleveland Cavaliers player turns 27 on Tuesday.

Amid the cold rain, Khloe covered her baby bump in a black mini dress, paired with a long coat. Tristan wore a black and white tie-dyed jacket, a white T-shirt, black jeans and a large gold and diamond chain.

"Look how nice you look!" Khloe said in a Snapchat video showing her beau.

Kourtney Kardashian and Younes Bendjima

The group enjoyed a family-style meal of kale and apple salad, oven-braised chicken meatballs, filet mignon, Mexican street corn ravioli and the eatery's famous "Les, NYC" doughnuts for dessert, the source said. Khloe later jumped on the mic to lead the entire party in singing "Happy birthday." Tristan took over to thank Rémy Martin cognac for hosting the birthday dinner and his guests for coming to celebrate with him.